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Curved gouges, possibly left by faulting, in a rock outcrop in Milford, CT.
These marks are hard to see far away - zoom in and pan around to see them better... the direction changes from vertical near the bottom of the outcrop to more horizontal near the top. |
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Close-up of slickensides ("chatter marks") along a fault in the Triassic New Haven formation, Simsbury, CT |
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Fifth of five from yesterday's field expedition. |
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difinitive faulted outcrop on east side of Verde Valley near Sedona Arizona |
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First in a series of pans of exposures of the Talcott basalt (early Jurassic age, ~200 million years old) in Meriden, CT
Pillow basalts form when lava is erupted underneath water (typically oceans, but in this case a briny lake). The water quickly cools the outside of the lava, but the inside is still pushing outwards (like blowing up a balloon, almost). Each one of the round-ish structures here is one of these pillows. See also: http://www.gigapan.org/viewGigapan.php?id=18647 http://www.gigapan.org/viewGigapan.php?id=18539 http://www.gigapan.org/viewGigapan.php?id=18532 http://www.gigapan.org/viewGigapan.php?id=18522 http://www.gigapan.org/viewGigapan.php?id=18518 |
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This view is toward Wilson Lake from Kansas 232, north of Wilson, Kansas. The knob on the right side of the image is an erosional remnant of Cretaceous aged Dakota Sandstone. Good large-scale bedding features are visible on zooming. |
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I had originally hoped to get into the Barton Garnet Mine to shoot a macroGigaPan of the famous Gore Mountain garnets, but unfortunately I was a little too early in the season. The garnets at the locality featured here are from a now-abandoned garnet mine in the area that is currently located on state lands. The garnets here aren't as huge as at Gore Mountain, but they're nothing to scoff at. I shot this GigaPan with autofocus on. I was going to take this into Photoshop to clean up the out-of-focus areas at the margin between the outcrop and the distant trees, but I in the end I decided it just wasn't worth the effort at this time, because that's really not the most interesting part of the image, anyhow. The unusual arc of the stitched image is likely the result of inaccurate leveling of the Epic100 robot. That's due to the fact that I had to take the robot off the tripod and place in on a rough rock surface and hold it in place by hand in order to get the correct angle perpendicular to the face of this outcrop. |
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The West Castleton Fold was the subject of my second ever (non-robotic) GigaPan (http://share.gigapan.org/viewGigapan.php?id=1204). This shot illustrates the axial region of a recumbant syncline in the Poultney Formation of the Giddings Brook Slice of the Taconic Allochthon. This outcrop is a textbook example of axial cleavage-bedding relations in the hinge of a fold. There are some remarkably ptygmatically folded quartz-rich layers interbedded with the slates. Although the light was not optimal when I visited it this summer, I was able to shoot a far more detailed GigaPan using the Epic100 robot. Light was fading as sunset approached, so I've taken this shot into Photoshop in order to try to optimize the image. The original (pre-photoshopping) metadata is included below: Stitcher Notes: GigaPan Stitcher version 0.4.4090 (Windows) Panorama size: 4250 megapixels (88928 x 47795 pixels) [Cropped in Photoshop to 4032 megapixels - 85663 x 47063 pixels] Input images: 840 (35 columns by 24 rows) Field of view: 87.1 degrees wide by 46.8 degrees high (top=42.8, bottom=-4.0) Settings: All default settings Original image properties: Camera make: Canon Camera model: Canon PowerShot SX10 IS Image size: 3648x2736 (10.0 megapixels) Capture time: 2009-06-03 19:07:07 - 2009-06-03 20:01:44 Aperture: f/5.7 Exposure time: 0.025 ISO: 200 Focal length (35mm equiv.): 565.2 mm Digital zoom: off White balance: Fixed Exposure mode: Manual Horizontal overlap: 23.9 to 51.8 percent Vertical overlap: 23.4 to 68.4 percent Computer stats: 3069.98 MB RAM, 2 CPUs Total time 14:38:02 (1:02 per picture) Alignment: 3:45:13, Projection: 45:49, Blending: 10:06:59 |
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Some photogenic geology/scenery from inside the park - past the "Arch" group site and along a dirt road leading to Chimney Rock. (The weather was threatening, so we didn't go very far... maybe next time?)
Yes, the cow watched the entire pan.... |
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Looking up the road, we can actually peer into the layering of this rock and see some of the structure.
And the bushes/flowers growing in the cracks. (For scale, of course :) ) Different views at http://gigapan.org/viewGigapan.php?id=5783 and http://gigapan.org/viewGigapan.php?id=5745 |